Saw-support.



No. 654,845. Patented July 31, I900. H. P. SCHOFIELD.

sAw SUPPORT.

(Application filed Mar. 24, 1900.)

2 Sheets-Sheet (No Model.)

Evan 1 W3.

No. 654,845. Patented July 3|, .1900.

I H. P. SCHOFIELD.

SAW SUPPORT.

(Application filed Mar. 24, 1900.)

(No Model.) V -2 Sheets$heet 2.

WM Mi The No ms PETERS c n. c.

3 HE STATES PATENT OFF C HENRY P. SCHOFI ELD, OF CHICAGO, ILLINOIS,ASSIGNOR OF ONE-HALF TO L. L. FILSTRUP, OF SAME PLACE.

SAW-S U PPORT.

SPECIFICATION forming part of Letters Patent No. 654,84 5, datedJu1y'31, 1900. Application filed March 24,1900. Sam... 10,000.(No'mbahn' T0 at whom it may concern:

Be it known that I, HENRY P. SCHOFIELD,

a citizen of the United States, residing at Ohicago, in the county ofCook and State of Illinois, have invented anew and usefulImprovement inSaw-Supports, of which the following is a specification.

My invention relates particularly to an improvement in saw-supports forusein supporting and guiding band-saws during the opera tion ofsharpening.

My object is to provide a support bearing a self-adjusting guide ofsimple construction.

In my application, Serial N o. 9,998,-filed on even date herewith, Ihave shown one embodiment of my invention in the form of a guideattached directly to a saw-sharpening machine. In the accompanyingdrawings a saw-sharpening machine and a guide of the construction shownin said application are merely indicated to show the position of thesharpening-machine relative to the independent supports herein fullydescribed and claimed.

In the drawings, Figure 1 is a plan view showing relative positions of asaw sharpening machine, band-saw, and supports for the saw; Fig. 2, aview in elevation of one of the independent end saw-supports, the sawbeing shown in section, as indicated at line 2 of Fig. 1 Fig. 3, a viewin side elevation of an intermediate independent support; Fig. 4E, aView taken as indicated at line 4 of Fig. 3 5 Fig. 5, a broken view, inside elevation, of one of the guides of an end saw-support; and Fig. 6,a sectional view taken as indicated at line 6 of Fig. 3.

A represents a saw-sharpening machine provided at its front side with asaw-support A; B, a band-saw in position for sharpening; C 0',independent and similar end saw-supports, and C an independentintermediate saw-support.

As is well understood, a band-saw having teeth on both edges assumesdifferent positions relative to the sharpening-machine according to theset of teeth being operated upon. machine, as shown in full lines inFig. l, and in another casethe saw is kept wholly in front of themachine, as shown in dotted lines in In one case the saw passes aboutthe Fig. 1. In any casethe saw is fed across the front of thesharpening-machine and sharpened automatically. The support 0 comprisesa base a, mounted on rename; a laterally-extending bar 0 secnredto theinner end of said base; adjustable bracket-arms a and 0t*,'carriedby-the ends of the bar a adjustable similar guides a and a, supportedfrom said bracket-arms, and an adjustable horizontally disposed Wheel orpulley a? for receiving the loop or end of the saw. The base a comprisestwo ends connected by rods or braces b and guides b, to the latter ofwhich is adjustably secured in the usual manner a vertical sleeve orhearing b said sleeve being internally threaded in the usual manner toreceive the stem or spindle 12 sup porting the Wheel a The stem 12 issecured at any desired height by a set-screw b. The inner end of thebase a is provided on its surface toward the saw-sharpening machine andclose to the floor-line with a lug 12 having a 1 curved or doubleincline upper surface, as

Figs. 1 and 2, the face of the inner end or' standard of the base isprovided with a raised part or boss d, having lateral extensions (1,

to which the bar at? is bolted.

The guide a comprises a threaded stemf passing loosely through a sleevef and provided with a way or groove f which receives the inner end of aset'-screwf ,1an adj ustingwheelf, resting on the top of said sleeve andhaving threaded connection with 'said stem; a stop-bearing head f fixedto the top of the stem f and having laterally extending stops f; a blockf provided at its lower centralportion with pivot-receiving'lugs'fembracing the sides of the head f and connected therewith by a pin f; atempered-steel saw-bearing strip f resting on the block f7;verticallydisposed blocks or standards f fiankingthe ends of the block fand secured bybolts f bolts f, passing through the pieces f and bearingat their inner ends against the bearing-strip f which is therebycentered, and

' ference of the wheel a horizontallydisposed longitudinally-extendingstrips f gpreferably of wood, supported by the standards f and havingbetween them a saw-receiving channel.

The guides a and a are alike and are so adjusted that thevertical centerplanes of their channels are tangential to the circummally separated bya small space from the adjacent portions of the pivoted block f and thusthe saw-bearing is left free to adjust itself so as to give full-lengthcontact with the saw.

The support is like the support 0, and the floor-stops c therefor arearranged in the same manner as those of the support 0.

The support 0 Figs. 3, 4, and 6, comprises a hollow base g; a threadedstem 9 passing loosely thereinto and provided with a way or groove 9engaged by a set-screw g extending through said base and into said way;an adj usting-wheel g resting on the top of said base and havingthreaded connection with said stem; a cast-metal head 9 fixed to saidstem and provided on one side with an integrally-formed verticalguide-arm g and on the opposite side with a pivot-lug g and on' oppositesides of a vertical transverse plane through said arm and log with lugs9 receiving adjustable stops or set-screws 9 headless pointed pivotalscrews g passing through the base of the arm 9 and through the lngg; atempered-steel bearing-strip g having central side depressions toreceive the endsof said pivotal screws, and a guide-arm 9 secured to thehead 9'? by a screw 9 The saw-receiving channel is between the arms gand 5 while thebearing-strip g is below said channel and normally freeto adjust itself to the saw, the set-screws 9 being not quite incontact'with the lower surface of said strip.

The intermediate support (3 is used either in the rear or in front ofthe sharpening-machine, depending on theposition of the saw. Additionalsupports may be used, if desired.

. It.wil1 be noted that in all the supports the guides are free toadjust themselves to the saw; also, it will be understood that thehandwheels connected with the threaded stems of the guides serve merelyto lift the guides and that, theguides settle back under their ownweight when the hand-wheels are turned in a' direction to raise them ontheir stems, and, finally, it may be stated that the channel bottoms oftheguides are only by preference equipped with steel bearing-stripsrather than with bearings of some other form.

, What I claim as new, and desire to secure by Letters Patent, is-

The stops f are nor 1. In a saw-support for band-saws, the com binationof a suitable base, and a bearing for the saw supported between its endson said base and left free to swing in the plane of the saw, to adjustitself automatically, substantially as and for the purpose set forth.

2. In a saw-support, the combination of a suitable base, a bearing forthe saw, and transversely-extending horizontally-disposed pivotalconnection between said bearing and base, said bearing being left freeto swing in the plane of the saw and thereby adjust itselfautomatically, substantially as and for the purpose set forth.

- 3. In a saw-support, the combination of a suitable base, a threadedstem passing loosely thereinto and provided with a way, a set-screwprojecting into said way, an adjusting-wheel resting on the, base andhaving threaded connection with said stem, and a saw-bearing carried bysaid stem, substantially as and for the purpose set forth.

4. In a saw-support, the combination of a suitable base, a headsupported therefrom, adjustable stops carried by said head, and asaw-bearing receiving the teeth of the saw and having pivotal connectionwith said head and limited in its movement by said stops, substantiallyas and for the purpose set forth.

5. In a saw-support, the combinationof a suitable base, a stemprojecting upwardly therefrom, means for raising and lowering said stem,a head carried by said stem provided with two stops, and a bar-form saw:bearing pivoted on a transversely-extending pivot intermediate saidstops and left free to swing in the plane of the saw, substantially asand for the purpose set forth.

,6. In a saw-support, the combination of a suitable base, a stemprojecting upwardly therefrom, means for raising and lowering said stem,a head carried by said stem providedwith two stops, a block providedwith lugs embracing said head intermediate said stops, pivotalconnection between lugs and head, and a saw-bearing and sideguide-strips connected with said block, substantially as and for thepurpose set forth.

7. The combination with a saw-support for the loop or end of a band-saw,comprising a base mounted on rollers and provided with a stop-engagin glug, suitable guides and a wheel for the saw, of two floor-stops locatedto singly and detachably engage said lug in either of the principalpositions of the support, substantially as and for the purpose setforth.

HENRY P. SOHOFIELD.

In presence of- D. W. LEE, A. D. BACCI.

